#include<bits/stdc++.h>
using namespace std;
int y[1000000][1000000];
int main(){
	int a,b,x,y,n;
	cin>>n;
	for(int i=1;i<=n;i++){
		cin>>a>>b>>x>>y;
		for(int j=a;j<=a+x;j++){
			for(int z=b;z<=b+y;z++){
				y[j][z]=i;
			}
		}
	}
	cin>>a>>b;
	cout<<y[a][b]
}

编译错误提示

[Error] invalid types 'int[int]' for array subscript

[Error] invalid types 'int[int]' for array subscript